import React, { Component } from 'react'
import avatar from './images/avatar.png'

export default class App extends Component {
  state = {
    // hot: 热度排序  time: 时间排序
    tabs: [
      {
        id: 1,
        name: '热度',
        type: 'hot',
      },
      {
        id: 2,
        name: '时间',
        type: 'time',
      },
    ],
    active: 'time',
    list: [
      {
        id: 1,
        author: '刘德华',
        comment: '给我一杯忘情水',
        time: '2021-11-10 09:09:00',
        img: 'https://y.qq.com/music/photo_new/T001R300x300M000003aQYLo2x8izP.jpg?max_age=2592000',
        // 1: 点赞 0：无态度 -1:踩
        attitude: 1,
      },
      {
        id: 2,
        author: '周杰伦',
        comment: '听妈妈的话',
        time: '2021-12-11 09:09:00',
        img: 'https://y.qq.com/music/photo_new/T001R500x500M0000025NhlN2yWrP4.jpg?max_age=2592000',
        // 1: 点赞 0：无态度 -1:踩
        attitude: 0,
      },
      {
        id: 3,
        author: '陈奕迅',
        comment: '十年',
        time: '2021-10-11 10:09:00',
        img: 'https://y.qq.com/music/photo_new/T001R500x500M000003Nz2So3XXYek.jpg?max_age=2592000',
        // 1: 点赞 0：无态度 -1:踩
        attitude: -1,
      },
    ],
  }
  handleTabChange = (active) => {
    return () => {
      this.setState({
        active,
      })
    }
  }
  HandleDel = (id) =>{
    // filter：如果返回true则保留，falseb不保留
    // 这里表示：item.id 不等于 id时，保留，item.id 等于 id时 删除
    this.setState({
      list:this.state.list.filter(item => item.id !== id)
    })
  }
renderlist() {
  const {list} = this.state
  return list.length === 0 ? <h3>暂无评论</h3> :
  list.map((item) => (
    <div className='list-item' key={item.id}>
      <div className='user-face'>
        <img className='user-head' src={item.img} alt='' />
      </div>
      <div className='comment'>
        <div className='user'>{item.author}</div>
        <p className='text'>{item.comment}</p>
        <div className='info'>
          <span className='time'>{item.time}</span>
          <span
            className={item.attitude === 1 ? 'like liked' : 'like'}
          >
            <i className='icon'></i>
          </span>
          <span
            className={item.attitude === -1 ? 'hate hated' : 'hate'}
          >
            <i className='icon'></i>
          </span>
          <span className='reply btn-hover' onClick={() => this.HandleDel(item.id)}>删除</span>
        </div>
      </div>
    </div>
  ))
}
  render() {
    const { list, tabs, active } = this.state
    return (
      <div className='App'>
        <div className='comment-container'>
          <div className='comment-head'>
            <span>{list.length} 评论</span>
          </div>
          <div className='tabs-order'>
            <ul className='sort-container'>
              {tabs.map((item) => (
                <li className={item.type === active ? 'on' : ''} key={item.id}
                onClick={this.handleTabChange(item.type)}>
                  按{item.name}排序
                </li>
              ))}
            </ul>
          </div>
          <div className='comment-send'>
            <div className='user-face'>
              <img className='user-head' src={avatar} alt='' />
            </div>
            <div className='textarea-container'>
              <textarea
                cols='80'
                rows='5'
                placeholder='发条友善的评论'
                className='ipt-txt'
              ></textarea>
              <button className='comment-submit'>发表评论</button>
            </div>
            <div className='comment-emoji'>
              <i className='face'></i>
              <span className='text'>表情</span>
            </div>
          </div>
          <div className='comment-list'>
            {this.renderlist() } 
       
          </div>
        </div>
      </div>
    )
  }
}